Bob's Gift Shop sold 550 cards for Mother's Day. One salesman, Caleb, sold 10% of the cards sold for Mother's Day. How many cards did Caleb sell?

In stepmber, daniel and justin opened a business. during their first three months of business, their average monthly profit was $51. if during their first month, they lost $29, and during their second month, they gained $115, what was their profit or loss for their third plzzz i will give you 299 points